This book is designed for logic building which is necessary as the first step in computer science and engineering graduate and post graduate courses. The book consists of number of general purpose problems with graphical solutions through flowcharts and once reader has grasp over the solution techniques, it will open the wide area of thinking scope for solving other complex computing problems. No prior computing as well as programing knowledge is required for reading this book, the knowledge may be added advantage but after completion of this book reader may be able to think in diverse directions for solving any problem. It is suggested to experiment these solutions with different set of values. After learning problem solving techniques, reader should implement them in any computer programing language for better experience of learning. All the suggestions are accepted at parmarvimal1976@yahoo.co.in